Secondary seal in a non-contact seal assembly
US11371617B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2018 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Oct 9, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/55
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A seal assembly for sealing a circumferential gap between a first machine component and a second machine component which is rotatable relative to the first machine component about a longitudinal axis. The seal assembly includes a seal carrier, a primary seal, a mid plate, at least one secondary seal, and a front plate. The at least one secondary seal interfaces with the front plate and the mid plate. A harder material is introduced at the interface of the mid plate and the front plate with the at least one secondary seal, that is made from a more wear resistant material than the other components at the interface, to provide the other component/s as a wear component that is replaced more often.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.